摘要
将聚碳酸酯（ＰＣ）和聚丙烯酸丁酯－聚甲基丙烯酸甲酯核－壳聚合物（ＰＢＡ－ｃｓ－ＰＭＭＡ），采用密炼机以不同条件机械混合。经力学性能测试、形态结构观察和转变行为表征表明，ＰＣ与ＰＭＭＡ具有一定的相容性，ＰＢＡ－ｃｓ－ＰＭＭＡ能很好地分散在ＰＣ中，当其含量超过１０％，共混物的冲击强度值为ＰＣ的１０余倍，是ＰＣ的良好增韧剂。增韧机理属银纹和剪切屈服共存。
Polycarbonate (PC)and cure-shell latex polymer composed of poly (butyl acrylate)and poly (methyl methacrylate) (PBA-ca-PMMA) as core and shell respectively, were mixed by using a brabender like apparatus under different conditions. The mechnical properties , the morphology of the fractured sections and the transition behaviour of PC and its blends were investigated.Because of the compatibility of PC with PMMA good dispersion of PBA-cs-PMMA in PC matrix and adhesion between the components have been achieved. So that PBA-cs-PMMA is a very good impact modifer for PC when its contents more than 10% in the blends. The toughening mechanism is both crazing and shear yielding,as indicated by the whitening and the lateral shrinking of the fractured sections.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1995年第6期9-12,共4页
Polymer Materials Science & Engineering
基金
国家基础性重大关键性项目
